<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
{#显示了使用自定义过滤器的功能#}
<div>{{ "baotingfang"|reverse }}</div>
<div>{{ "hanjing"|reverse_func }}</div>
</body>
</html>